The flowering plants of Africa: An analytical key to the genera of African phanerogramsThonner, Franz
Science
The flowering plants of Africa: An analytical key to the genera of African phanerograms
Thonner, Franz
Angiosperms -- Africa; Plants -- Africa
Perianth 6-parted or 6-cleft. Fertile stamens 6-9. 7
7. Fertile stamens 6, each with 2 glands. Flowers in racemes.--Species
1. Madagascar. =Berniera= Baill.
Fertile stamens 9, rarely 6, all or the outer ones without glands.
Flowers in panicles. 8
8. Staminodes within the fertile stamens none. Filaments oblong
or obovate, the inner ones each with 2 oblong, wholly adnate
glands.--Species 3. Equatorial West Africa (Cameroons). They yield
timber. =Tylostemon= Engl.
Staminodes within the fertile stamens present. Inner fertile stamens
with 2 roundish glands at their base. 9
9. Perianth persistent. Leaves herbaceous.--Species 1. Canary Islands
and Madeira. Yields timber. =Apollonias= Nees
Perianth deciduous. Leaves leathery.--Species 20. Tropics. Some species
yield timber or edible seeds. (_Afrodaphne_ Stapf, _Hufelandia_ Nees,
_Nesodaphne_ Hook., under _Tylostemon_ Engl.) =Beilschmiedia= Nees
10. (1.) Anthers 9-14 (usually 12), all turned inwards. Flowers
dioecious, in umbels.--Species 2. Naturalized in the Mascarenes and
Seychelles. They yield timber, a fat, and medicaments. (_Tetranthera_
Jaqu.) [Tribe LITSEEAE.] =Litsea= Lam.
Anthers 9, the outer turned inwards, the inner outwards. Flowers
hermaphrodite or polygamous, usually in panicles. [Tribe CINNAMOMEAE.]
11
11. Staminodes very small and awl-shaped or wanting. Receptacle
accrescent. Flowers usually polygamous. 12
Staminodes well developed, thickened at the apex. Receptacle scarcely
or not accrescent. Flowers usually hermaphrodite. 13
12. Anther-valves side by side. Ovary inferior.--Species 1. West Africa
(Cameroons). (Under _Ocotea_ Aubl.) =Hypodaphnis= Stapf
Anther-valves in superposed pairs. Ovary superior.--Species 15.
Tropical and South Africa, Canary Islands, Azores. They yield timber,
fat, condiments, and medicaments. (Including _Mespilodaphne_ and
_Oreodaphne_ Nees). (Plate 51.) =Ocotea= Aubl.
13. Leaves trinerved. Perianth-segments falling singly after the time
of flowering.--Species 2 (_C. zeylanicum_ Breyn, cinnamon, and _C.
camphora_ Nees & Eberm., camphor). Cultivated in the tropics. They
yield timber, spices, and drugs for industrial and medicinal uses.
=Cinnamomum= Blume
Leaves penninerved. Perianth persisting or falling off as a whole. 14
[Illustration: LAURACEAE.
_FLOW. PL. AFR._
_Pl. 51._
J. Fleischmann del.
Ocotea bullata (Burch.) Benth.
_A_ Flowering branch. _B_ Male flower cut lengthwise. _C_ Stamens. _D_
Staminode. _E_ Female flower cut lengthwise. _F_ Group of fruits. _G_
Young fruit cut lengthwise.]
[Illustration: PAPAVERACEAE.
_FLOW. PL. AFR._
_Pl. 52._
J. Fleischmann del.
Trigonocapnos curvipes Schlecht.
_A_ Flowering branch. _B_ Flower. _C_ Petals (_a_ the upper, _b_ one of
the lateral, _c_ the lower). _D_ Bundle of stamens (the third anther
not visible). _E_ Pistil (the ovary cut lengthwise).]
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